From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerrit Renker Date: Thu, 26 Jul 2007 10:02:27 +0000 Subject: Re: TFRC Faster Restart implementation for Linux DCCP Message-Id: <200707261102.27871@strip-the-willow> List-Id: References: <5640c7e00707152131k689ff53dn105ed1c0f3b90717@mail.gmail.com> In-Reply-To: <5640c7e00707152131k689ff53dn105ed1c0f3b90717@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: dccp@vger.kernel.org | > There is an issue with the ping probes, will write up in a separate email. | > | I'm not intending to implement ping probes as per IETF mailing list. I am just about to catch up with the results from Monday ... it seems the authors are going to make the ping probes optional anyway. http://www1.ietf.org/mail-archive/web/dccp/current/msg02478.html The problem that I found with the ping probes is that they need to be sent at a rate of max(t_ipi, 4*R). With small RTTs, this would mean bursts of 3..10 ping packets per timer tick ... which is quite a lot for an `idle' connection.